Mercedes-Benz is throwing a big sendoff for the 25-year-old G-Class--the rugged, function-first, military-inspired sport/utility--by giving it the most powerful V-8 ever offered in any factory-sold SUV.

There's something about a barroom brawl that we like. The easiest way to choose a clear winner is to look for the last guy standing. That's what we decided to do after listening to public-relations reps, marketing experts, and ad-agency wanks tell us their vehicle was the toughest, roughest, and mos